Method for purifying blood plasma and apparatus suitable therefor
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United States of America Patent
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Jan 2, 2001
Grant Date -
N/A
app pub date -
Feb 10, 2000
filing date -
Nov 8, 1996
priority date (Note) -
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Abstract
A method for purifying conventionally treated blood plasma to remove substantially all residual leukocytes while maintaining useful flow rates for medically useful amounts of plasma utilizes a disposable, heat-sterilizable filter employing one or more depth-type prefilters and at least one intermediate hydrophilic microporous membrane followed by at least one final hydrophilic microporous membrane having a smaller pore size than the intermediate membrane within a common housing. The purified plasma is preferably subjected to chemical treatment to destroy infectious agents such as hepatitis and HIV.
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